泥沙参数选择方法及在悬沙浓度研究中的应用  

Sediment parameter selecting method and its application in sediment concentration research

作　　者：董佳[1] 张宁川[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,大连116024

出　　处：《水道港口》2011年第5期321-328,共8页Journal of Waterway and Harbor

基　　金：国家自然科学青年基金资助项目(51009022)

摘　　要：在淤泥质海床条件下、泥沙运动以潮流为主要外动力时,床面糙率、河床淤积物的干密度、床层间的泥沙转换率3个参数对悬沙浓度的计算结果影响最大,且在不同海域存在较大可变性。研究表明:床面糙率、软底海床淤积物干密度、床层间的泥沙转换率的最优取值分别为2 d、250 kg/m3、0.001(kg.m-2)/s,采用上述参数,对洋山港周围水域悬沙浓度进行验证计算,计算值和实测值吻合较好。Under the condition of the muddy seabed,with the tide as main outside dynamic to the sediment movement,the value of bed roughness,dry density of the bed layers,sediment transition between layers affect the suspended sediment concentration,and exist large variability in the different ocean area.Research shows that the best value for bed roughness of 2 d,for the soft bed layer of 250 kg/m3,for the sediment transition between layers of 0.001（kg·m-2）/s.By using the value of parameters to calculate the suspended sediment concentration of the Yangshan Port,the suspended sediment concentration and the measured data are coincident.

关 键 词：泥沙参数 水动力模型 悬沙浓度 

分 类 号：TV142[水利工程—水力学及河流动力学] O242.1[理学—计算数学]